<template>
  <div class="login_container">
    <!-- 登录盒子 -->
    <div class="login_box">
      <!-- 头像 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- from表单 -->
      <el-form ref="loginFormref" label-width="0px" class="login_form" :model="loginForm" :rules="loginFormRules">
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input  prefix-icon="iconfont icon-user" v-model.trim="loginForm.username"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input  prefix-icon="iconfont  icon-3702mima" v-model.trim="loginForm.password" type="password"></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resstloginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
    data() {
        return {
            //form表单绑定对象
            loginForm : {
              username : '',
              password : ''
            },
            //表单验证
            loginFormRules : {
              //用户名校验
            username : [
                { required: true, message: '请输入用户名', trigger: 'blur' },
            { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
            ],
            //密码验证
            password : [
                { required: true, message: '请输入密码', trigger: 'blur' },
            { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
            ]
            }
        }
    },
    methods : {
      //重置功能
      resstloginForm() {
        //组件库内置重置函数
        this.$refs.loginFormref.resetFields()
      },
      //登录按钮
      login() {
        //表单内容验证 如果符合参数返回true 反之为false
        this.$refs.loginFormref.validate(async valid => {
          //判断用户名和密码是否符合规则
          if(!valid) return
          //运行到这一步证明验证成功
          //发送请求
        const {data:res} = await this.$http.post('login' ,this.loginForm)
        if(res.meta.status !== 200) return this.$message.error('登录失败！')
        console.log(res);
        this.$message.success('登录成功')
        //将服务器返回的token添加到本地
        window.sessionStorage.setItem('token', res.data.token)
        //通过路由跳转到主页
        this.$router.push({
          path : '/home'
        })
        })
      }
    }
};
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    position: absolute;
    left: 50%;
    width: 130px;
    height: 130px;
    background-color: #fff;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    transform: translate(-50%, -50%);

    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}

.btns {
  display: flex;
  justify-content: flex-end;
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
</style>
>
